ML20135F602
| ML20135F602 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 12/05/1996 |
| From: | Dromerick A NRC (Affiliation Not Assigned) |
| To: | NRC |
| References | |
| NUDOCS 9612130146 | |
| Download: ML20135F602 (4) | |
Text
_. _
December 5, 1996 r;;3, n, j yf MEMORANDUM TO:
FILE Alexander W. Dromerick & WD FROM:
SUBJECT:
BGE RESPONSE TO STAFF'S TELECON QUESTIONS OF OCTOBER 10, 1996, REGARDING CONTAINMENT PURGE SYSTEM MODIFICATION LICENSE AMENDMENT REQUEST i
I On October 10, 1996, the staff asked the licensee several questions regarding the containment purge system modification concerning the type flanges, number of "0" rings, leak testing capability and flange material.
In the attached facsimile dated October 15, 1996, the licensee provided the responses to the staff's questions, cc: Andrzej Drozd Carl Berlinger
Attachment:
As stated DJSTRIBUTION PDR j
PDI-1 R/F 1
1 1
l 130011 9612130146 961205 PDR ADOCK 05000317 P
l, OCT 15 '9G 14: 21 FROM CCNPP/HRM 1-NEF TO NRC PM PAGE.C01
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nasse as the answers to the q=#aan yow posed to Pet Pwie aban our CW Purge l
Symem madinandan and Licenes A=aad==vt Raquest, ifyou have say other questions, either of i
j us wui be evenshie to gis you the answers.
i NedTyler x4714
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- 1. As stead en Amanh=are 1, Page 1, of ourrequest louer, the hitnd flangs will have two conouario 0 dag seals mounted la the seedng surtos of the flange. The finnes will be sonstructed to B31.1 Code and initially tested to a combinesian of B31.7, Class H; ASME Section XI and 10 CFR.Part 50, Appendiu J. Where one testing requirement envelopes another, we will l
perden one inst and medit it to bodi roquirements.
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3.1he 10CFR Part 50, Appendix J, Type B leakaps test mentiomd an Attachment 2, Page 1 will i
be conducted by pressurkms the sysos between the blind flange U-lings to 50 psig wth tbs finnes l
inesised as the comminmem puros ra=**iaa piping.
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- 4. The pury velves are opened by plemt instruman mir and closed by spring temica. The signal ihr automatic classe of Ibe valves comes fhna the canadnment nubation dessators (Containment l
Radhalon Mansi). The coc+ I-Radation signalis powered by a ashty eelsted electrical bus.
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- 5. The remeimag can' umsma purgs valves will notbe used fbr contmimaeut latsgrity when the unitis operating atyx.a and, therehse, the position (open or shut)is ' oanoagnmaial in Modes 1-m
- 4. In those moder u bd flangs will be relied on to cloes each pury penetrabon, la hot, the i
volves mer he leh
- s.m pressetthe seals. When entering an outags (Modes 5 and 6),1bo purge j
valves will be shut and deted to 12 psig prior to renoving the blind fienge. Once the flange is j
rumoved, the volves will b e opened er shut depending on operations and plant annditions during tbs outags. At the and of the o6*ggs, the blind flangs will be reinstalled and tested prior to eneming Mode 4.
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